288 Canon A. M. Norman — yfotes on 



The specimens from the mainland near Guayaquil do not 

 appear to differ at all from those obtained on Pund Island. 



This Marmosa has some resemblance to Tomes's M. Water- 

 housei, but that is said to have a pouch in the female and 

 came from the eastern side of tiie Andes at Gualaquiza. 



I have named this pretty opossum, the first-fruit of 

 Mr. Simons's Ecuadorean trip, in his honour, in recognition 

 of tlie collecting powers he has shown both in Mexico (where 

 he obtained a number of new mammals describe! by 

 Dr. Allen and myself) and now in Ecuador. 



XXVIII. — Notes on Montagu's Hunti'ng- ground, Sahomhe 

 Bay. By the Rev. Canon A. M. Nokman, M.A., D.C.L., 

 LL.D., F.R.S., &c. 



[Plate V. figs. 1, la.] 



Pereionotus testudo (Montagu). (PI. V. figs. 1, la.) 

 1808. Oniacus testudo, Montagu, Trans. Linn. Soc. vol. ix. p. 102, pi. v. 



1862. Pereionotus testudo, Bate & Westwood, Brit. Sessile-eyed Crust, 

 vol. i. p. 228. 



1862. Pereionotus testudo, Bate, Cat. Amphip. Crust, in Brit. Mus. 

 p. 375. 



18(34. Icridium fuscum, Grube, " Beschr. einiirer Ampbipoden der 

 Istrichen Fauna," Arch. f. Naturg. 30 Jahrg. p. 209, pi. v. tipr. 3 a-/. 



1893. Pereionotus testudo, Delia Valle, Faun, und Flor. des (.Tolfes von 

 Neapel, Gammarini, p. 559, pi. iii. tig. 7, pi. xxxi. figs. 1-19 p. 



1899. Pereionotus testudo, Stebbiiig, " Ampbipoda from tbe Copen- 

 hagen Museum and other sources," Trans. Linn. Soc, Zool. ser. 2, 

 vol. vii. p. 417. 



Pereionotus testudo is a very remarkable Amphipod, with 

 the metasome (or pleon) much reduced in proportion to the 

 mesosome (or person), and, moreover, theepimera are outspread 

 and horizontal instead of, as usual, nearly vertical ; the whole 

 form is thus depressed instead of compressed as in ordinary 

 Amphipoda, and it is not therefore to be wondered at that 

 Montagu assigned it to Oniscus and not to Ganimarus. 



Montagu procured his type at Salcombe, and when Bate 

 and Westwood were publishing their work this type was 

 fortunately found to be in the Biitish Museum. From it 

 their figures were taken, and are very characteristic drawings 

 considering that they were made from a specimen which had 

 been preserved dry for fifty-four years. 



As yet the species has not been met with in any other part 



